There is no Legacy 2.0. The current versions of the Legacy #990 software are BASE 1.60 and CAB2 1.72. The update procedure is exactly the same for any version. You can update any system yourself that's at 1.20 or later. You need 1.30 on the base to have it write modules. You can update to any version from another subject to the previous restrictions, and you can downgrade if there's some specific issue you have with a version.
|